Flash Cannon is a special Steel-type move in Generation IV. It has a 10% chance to decrease the opponent's Special Defense by one level each time it is used. The TM for this move can be acquired in two ways; as the 1st place prize for winning Tuesday's Lottery at the Goldenrod Dept. Store and awarded upon Byron's defeat.
The user gathers all its light energy and releases it in one shot. It may also lower the foe's Sp. Def stat.